| Acronym | Definition |
|---|
| RPi | Raspberry Pi (computing; UK) |
| RPi | Rensselaer Polytechnic Institute (Troy, NY, USA) |
| RPi | Ratings Percentage Index (college basketball) |
| RPi | Retail Price Index |
| RPi | Retail Price Inflation |
| RPi | Republican Party of Iowa (Des Moines, IA) |
| RPi | Remote Programming Interface (computing) |
| RPi | Remote Process Interface (computing) |
| RPi | Resort Parks International (Signal Hill, CA) |
| RPi | Rockwell Protocol Interface (modems) |
| RPi | Responsible Property Investing |
| RPi | Regroupement Pédagogique Intercommunal (French: Intermunicipal Education Coalition) |
| RPi | Real Property Inventory |
| RPi | Radial Point Interpolation (antennas) |
| RPi | Roberts Realty Investors, Inc. (Atlanta, GA) |
| RPi | Rapid Process Improvement |
| RPi | Richmond Professional Institute (Virginia) |
| RPi | Ribozyme Pharmaceuticals, Inc. (Boulder, CO) |
| RPi | Repayment Protection Insurance (loans) |
| RPi | Restaurant Partners, Inc. (est. 1992) |
| RPi | Randolf Productions, Inc. (Irvine, CA) |
| RPi | Research Planning, Inc. |
| RPi | Reticulocyte Production Index |
| RPi | Railway Progress Institute |
| RPi | Revista da Propriedade Industrial (Official Gazette of the Brazilian Patent and Trademark Office; Brazil) |
| RPi | Related Proteins of the Immune System |
| RPi | Rapid Problem Identification |
| RPi | Requested Packet Interval |
| RPi | Related-Party Initiative (Canada) |
| RPi | Runs Per Inning (baseball) |
| RPi | Rengo Packaging, Inc. (Hawaii) |
| RPi | Royal Palm Insurance (Florida) |
| RPi | Runway Point of Intercept |
| RPi | Raster Printers, Inc. (San Jose, CA) |
| RPi | Rose Polytechnic Institute (Indiana) |
| RPi | Regional Perfusion Index |
| RPi | Repetitive Motion Injury |
| RPi | Ravalement, Peinture, Isolation (French: Cleaning, Painting, Insulation) |
| RPi | Rated Position Identifier |
| RPi | Real Polytechnic Institute |
| RPi | Roll Position Indicator |
| RPi | Ranking Percentage Index (sports statistic) |
| RPi | Red Planet Interactive Games |
| RPi | Recruiting Publicity Item (US Army) |
| RPi | Radar Precipitation Integrator |
| RPi | Residue Processing Initiative |
| RPi | Races Per Incident (racing) |
| RPi | Ridder Publications, Inc. |
| RPi | Responsive Production Inventory |
| RPi | Response Posture Immediate |
| RPi | Riviera Prestations Informatique (French: Riviera Computer Services) |
| RPi | Remarried Parents, Inc. |
| RPi | Request for Problem Investigation |
| RPi | Relay Position Indicator |
| RPi | Residual Plan of Instruction |
| RPi | Ressorts Produits Industriels (French: Springs Industrial Products) |
| RPi | Ressources Professionnelles Informatiques (French: Professional Computer Resources; Canada) |